摘要:
A transmitting apparatus includes a frame dividing circuit that maps frame data of each of a plurality of frames whose period is different from each other into one or a plurality of internal frames having a fixed frame period and a fixed transmission rate, based on a predetermined internal clock; a cross-connect circuit that cross-connects the frame data of each in a time division multiplexing system based on the internal clock in units of the internal frames; and a frame combining circuit that demaps, into any of the plurality of frames, or multiplexes, data of one or a plurality of internal frames cross-connected by the cross-connect circuit.
摘要:
A method for generating a frame signal includes monitoring a first frame signal and obtaining a first parameter based on the monitoring result; setting a second parameter based on the type of the first frame signal; when the first frame signal is being input, generating a second frame signal with a bit rate different from that of the first frame signal by determining data and stuff byte positions based on the first parameter and performing frame processing on data and stuff bytes corresponding to the first frame signal based on the determined data and stuff byte positions; and when the first frame signal is not being input, generating the second frame signal by determining the data and stuff byte positions based on the second parameter and performing the frame processing on data and stuff bytes corresponding to a maintenance signal based on the determined data and stuff byte positions.
摘要:
An apparatus for mapping multiple lower-speed signal transmission frames to a higher-speed signal transmission frame. The apparatus includes buffers configured to buffer the lower-speed signal transmission frames, determination units configured to determine frequency justification information for the lower-speed signal transmission frames, a barrel shifter configured to receive signals output from the buffers, and a controller configured to control the barrel shifter to map the lower-speed signal transmission frames to the higher-speed signal transmission frame based on external settings for the respective lower-speed signal transmission frames and the frequency justification information determined by the determination units. When the minimum unit of the lower-speed signal transmission frames is a channel, the number of the buffers and the number of the determination units correspond to the maximum number of channels that can be multiplexed in the higher-speed signal transmission frame.
摘要:
A transmission apparatus stores frame data of a first frame in a second frame having a bit rate different from that of the first frame through regulation of the amount of stuffs to be stored in the second frame. The transmission apparatus includes: a storage unit storing the first-frame frame data; a first control unit controlling a timing of writing the first-frame frame data in the storage unit based on first stuff information indicating the amount of stuffs contained in the first frame; an arithmetic and logic unit obtaining second stuff information indicating the amount of stuffs to be contained in the second frame based on a bit rate ratio between the first frame and the second frame; and a second control unit controlling a timing of reading out the first-frame frame data stored in the storage unit based on the second stuff information.
摘要:
A transmission device includes a synchronous transmission network interface section, a switch section, first and second LAN interface sections, a distribution section, and a transmission and reception section, and said second LAN interface section includes a de-mapping section, a transmission and reception section, a collection section, and a mapping section.
摘要:
A redundancy control method is disclosed that controls a first redundancy function that switches between a working line and a protection line in response to a detection of a line error and a second redundancy function that performs a path switching in response to a detection of a path error in a ring network operating at a path rate lower than a line rate thereof. The method comprises a step of masking the path error detection within a period from a time of the detection of the line error to an expected time of the detection of the path error.
摘要:
A carbon wire heating element sealing heater is provided. Therein, a carbon wire heating element using carbon fibers is sealed in a quartz glass member, wherein absorption water quantity of the carbon wire heating element is 2×10−3 g/cm3 or less.
摘要翻译:提供碳丝加热元件密封加热器。 其中,使用碳纤维的碳丝加热元件密封在石英玻璃构件中,其中碳线加热元件的吸收水量为2×10 -3 / cm 3 或更少。
摘要:
A method of attachment for a tape body which supports, on reel hubs, a tape body such as a leader tape, etc. to which a magnetic tape is connected. This attachment structure comprises a tape reel provided with a reel hub which takes cylindrical shape provided at the central portion thereof and a clamp member attached to the reel hub, and a tape body connected to the reel hub in the state where the end portion is supported by the clamp member and wound on the outer circumferential surface of the reel hub. The tape body supported by the reel hub is such that the base end portion side serving as root portion of the drawing side from the reel hub is deformed in the winding direction onto the reel hub following the outer circumferential surface of the reel hub. Deformation of the tape body is carried out by thermal deformation or pressure deformation, or thermal deformation and pressure deformation. The root portion serving as the supporting portion side onto the reel hub of the tape body is deformed following the outer circumferential surface of the reel hub, whereby the tape body is wound in the state closely in contact with the outer circumferential surface of the reel hub.
摘要:
A casing for a disc cartridge includes first and second halves and a pair of holding means. The first half includes a plate portion, a pair of sidewall sections formed parallel to the parallel sides of the plate portion and a wall section between the sidewall sections. The second half includes a plate portion, a pair of sidewall sections formed parallel to the parallel sides of the plate portion and a wall section between the sidewall sections. Each of the sidewall sections is formed with a protrusion and a groove. The first and second halves are connected together by having the protrusion engaged in the groove. A holding unit is provided in an inner portion of the second half.
摘要:
In an apparatus for accommodating and multiplexing asynchronous client signals in which an idle signal is defined, the transmission side transmits client signals after synchronizing the client signals by inserting or removing, with reference to a specific client signal, an idle signal to/from the same type of another client signal, and in the receiving side, a PLL part is shared by recovering a clock from a client signal and distributing the clock for another client signal.